Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o cooper com um Ashmolean menor que 21 e hahland menor que 4?
 ###Tabelas: CREATE TABLE club_brugge (club_brugge_id AUTO_INCREMENT PRIMARY KEY, Round VARCHAR, Opposition VARCHAR, First leg VARCHAR, Second leg VARCHAR, Aggregate score VARCHAR) CREATE TABLE reconstruction_in_the_british_museum (reconstruction_in_the_british_museum_id AUTO_INCREMENT PRIMARY KEY, Image INT, Smith VARCHAR, Ashmolean INT, Foster INT, Hahland INT, Dinsmoor VARCHAR, Hofkes-Brukker VARCHAR, Harrison VARCHAR, Cooper VARCHAR, BM/Corbett VARCHAR) CREATE TABLE locomotives_of_the_early_period_for_all_types_of_train (locomotives_of_the_early_period_for_all_types_of_train_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Number(s) VARCHAR, Quantity VARCHAR, Year(s) of Manufacture VARCHAR, Type VARCHAR) CREATE TABLE winners_of_the_allaire_dupont_distaff_stakes_since_1992 (winners_of_the_allaire_dupont_distaff_stakes_since_1992_id AUTO_INCREMENT PRIMARY KEY, Year INT, Winner VARCHAR, Jockey VARCHAR, Trainer VARCHAR, Owner VARCHAR, Distance VARCHAR, Time VARCHAR, Purse VARCHAR) CREATE TABLE recreational_aircraft (recreational_aircraft_id AUTO_INCREMENT PRIMARY KEY, Manufacturer VARCHAR, Model VARCHAR, Kit/Factory VARCHAR, Wing VARCHAR, Seats INT)  
SELECT Cooper FROM reconstruction_in_the_british_museum WHERE Ashmolean < 21 AND Hahland < 4